Assessing Cotton Genotypes for Resistance to Aphis gossypii (Hemiptera: Aphididae)

Abstract

Aphis gossypii Glover (Hemiptera: Aphididae) is a polyphagous species frequently associated with the presence of sooty mold and viruses lethal to plants. The purpose of this work was to characterize possible resistance categories of cotton genotypes against A. gossypii. Initially, a preliminary test was carried out with 78 genotypes, 15 of which were selected for infestation ability assays and the determination of the cumulative aphid-day rates. Posteriorly, these genotypes were also evaluated through antixenosis and antibiosis assays. The genotypes FM 910, FM 966 LL, Mocó, Gossypium hirsutum var. punctatum L. (Malvaceae), Variedade Reba = BTK-12, Deltapine, Hi-Bred, Acala 4–42, IAC PV010-1664, IAC 21, Reba B-50 PR and FMT 709 inhibited the aphid colonization. In the infestation ability assay, G. hirsutum punctatum, IAC PV010-1664 and Acala 4–42 were the least infested. In a multiple-choice assay, Deltapine Smooth Leaf and Variedade Reba = BTK-12 were significantly less infested, suggesting antixenosis. In the antibiosis assay, Gossypium arboreum L. (Malvaceae) 1 showed the lowest number of nymphs, number of nymphs per adult per day and, number of nymphs at 10 d after the birth of the first nymph in addition to reducing the reproductive period, nymphal survival, adult longevity and, developmental time. In the FM 910, the number of nymphs produced per day and, at 10 d after the birth of the first nymph decreased, which also indicated resistance. The results obtained here are unprecedented and can be explored in breeding programs to develop insect-resistant cotton cultivars.

Categories of resistance in cotton genotypes,Gossypiumspp. against cotton-melon aphid,Aphis gossypii(Hemiptera: Aphididae)

“…This practice was continued until the experimental adult's death. A total of 6 parameters, including total nymphs produced, nymphs produced per day, total nymph produced by day 10 after the experimental nymph's birth, experimental nymph's developmental time, adult reproductive stage duration, and adult longevity, were estimated from the data gathered (Morando et al 2021).…”

“…Given the importance of aphids as a major cotton pest and the need for developing durable cotton aphid management technology, HPR remains a unique and frontline approach. However, research on screening cotton genotypes for aphid resistance remains sparse (Weathersbee and Hardee 1994, Razmjou et al 2006a, 2006b, Zarpas et al 2006, Furtado et al 2009, Correa et al 2013, Morando et al 2021). Despite all of the breakthroughs made in insect pest management tactics, conventional breeding-based development of insect-resistant crops is still regarded as the most effective way and the foundation for insect pest management programs (Marimuthu and Smith 2012, Smith 2021).…”

Insecticide resistance monitoring and diagnostics of resistance mechanisms in cotton‐melon aphid, Aphis gossypii Glover in Central China

“…Several environment‐friendly control tactics have been adopted for management A. gossypii in the last few decades, such as biocontrol (Madadi et al, 2011; Sahayaraj et al, 2020; Zhao et al, 2021), and plant resistance (Boissot et al, 2016; Morando et al, 2021), while spraying synthetic insecticides remains the dominant approach to combat A. gossypii (Ma et al, 2019, 2021; Shi et al, 2022). However, the frequent application and overuse of chemical insecticides resulted in the rapid evolution of resistance of A. gossypii to many types of insecticides, including organophosphorus, pyrethroid, and neonicotinoid insecticides (Gore et al, 2013; Koo et al, 2014).…”

“…Several environment-friendly control tactics have been adopted for management A. gossypii in the last few decades, such as biocontrol (Madadi et al, 2011;Sahayaraj et al, 2020;Zhao et al, 2021), and plant resistance (Boissot et al, 2016;Morando et al, 2021), while spraying synthetic insecticides remains the dominant approach to combat A. gossypii (Ma et al, 2019(Ma et al, , 2021Shi et al, 2022).…”

Residual toxicity of selected insecticides on Aphis gossypii and their safety limits on honeybees

“…This target pest causes a high level of economic and ecological problems associated with the occurrence of sooty mold and lethal virus diseases to plants. It also possesses a rapid reproduction and high insecticide resistance (Quan et al, 2019;Zhao et al, 2021;Morando et al, 2021).…”